/**
 * Email and URL obfuscation utilities
 * Prevents automated scraping while keeping functionality
 */

/**
 * Obfuscates an email address by encoding it
 * @param email - The email address to obfuscate
 * @returns Obfuscated email string that can be decoded by JavaScript
 */
export function obfuscateEmail(email: string): string {
  // Simple base64 encoding (can be decoded by bots, but adds a layer)
  // For better protection, use a custom encoding scheme
  return Buffer.from(email).toString('base64');
}

/**
 * Deobfuscates an email address
 * @param obfuscated - The obfuscated email string
 * @returns Original email address
 */
export function deobfuscateEmail(obfuscated: string): string {
  try {
    return Buffer.from(obfuscated, 'base64').toString('utf-8');
  } catch {
    return obfuscated; // Return as-is if decoding fails
  }
}

/**
 * Creates an obfuscated mailto link component
 * @param email - The email address
 * @param displayText - Text to display (optional, defaults to email)
 * @returns HTML string with obfuscated email
 */
export function createObfuscatedMailto(email: string, displayText?: string): string {
  const obfuscated = obfuscateEmail(email);
  const text = displayText || email;
  
  // Use data attributes and JavaScript to decode
  return `<a href="#" data-email="${obfuscated}" class="obfuscated-email" onclick="this.href='mailto:'+atob(this.dataset.email); return true;">${text}</a>`;
}

/**
 * Obfuscates a URL by encoding parts of it
 * @param url - The URL to obfuscate
 * @returns Obfuscated URL string
 */
export function obfuscateUrl(url: string): string {
  // Encode the URL
  return Buffer.from(url).toString('base64');
}

/**
 * Creates an obfuscated link
 * @param url - The URL
 * @param displayText - Text to display
 * @returns HTML string with obfuscated URL
 */
export function createObfuscatedLink(url: string, displayText: string): string {
  const obfuscated = obfuscateUrl(url);
  return `<a href="#" data-url="${obfuscated}" class="obfuscated-link" onclick="this.href=atob(this.dataset.url); return true;">${displayText}</a>`;
}

/**
 * React component helper for obfuscated emails
 * Note: This is a TypeScript utility file. For React components, create a separate .tsx file
 * or use the HTML string functions instead.
 */